Numerical Analysis of Heat Storage Phenomenon in a Dual Latent Heat Sink

    Authors

    K. M. Kota; L. C. Chow; J. H. Du; J. S. Kapao; Q. H. Leland;R. J. Harris

    Abstract

    This paper focuses on the numerical analysis of the heat storage phenomenon in a dual latent heat sink intended for low thermal duty cycle electronic heat sink applications. The effectiveness of this heat sink depends on the rapidness of the charging facility in the design during the pulse heat generation period of the duty cycle. Heat storage in this heat sink involves the transient simultaneous laminar film condensation of vapor and melting of an encapsulated phase change material in graphite foam. The key focus of this paper is to numerically analyze this conjugate heat transfer problem including the wall inertia effect and thus verify the effectiveness of the heat storage mechanism of the heat sink. An effective heat capacity formulation is employed for modeling the phase change problem and is solved using the finite element method. The results of the developed model showed that the concept is effective in preventing an undue temperature rise of the system.

    Journal Title

    Journal of Thermophysics and Heat Transfer

    Volume

    23

    Issue/Number

    1

    Publication Date

    1-1-2009

    Document Type

    Article

    First Page

    148

    Last Page

    156

    WOS Identifier

    WOS:000262842500015

    ISSN

    0887-8722

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